2 * Adaptive Body Bias programming sequence for OMAP5 family
5 * Texas Instruments, <www.ti.com>
7 * Andrii Tseglytskyi <andrii.tseglytskyi@ti.com>
9 * SPDX-License-Identifier: GPL-2.0+
13 #include <asm/omap_common.h>
17 * Setup LDOVBB for OMAP5.
18 * On OMAP5+ some ABB settings are fused. They are handled
19 * in the following way:
21 * 1. corresponding EFUSE register contains ABB enable bit
23 * 2. If ABB enable bit is set to 1, than ABB should be
24 * enabled, otherwise ABB should be disabled
25 * 3. If ABB is enabled, than VSET value should be copied
26 * to corresponding MUX control register
28 s8 abb_setup_ldovbb(u32 fuse, u32 ldovbb)
33 * ABB parameters must be properly fused
34 * otherwise ABB should be disabled
37 if (!(vset & OMAP5_ABB_FUSE_ENABLE_MASK))
40 /* prepare VSET value for LDOVBB mux register */
41 vset &= OMAP5_ABB_FUSE_VSET_MASK;
42 vset >>= ffs(OMAP5_ABB_FUSE_VSET_MASK) - 1;
43 vset <<= ffs(OMAP5_ABB_LDOVBBMPU_VSET_OUT_MASK) - 1;
44 vset |= OMAP5_ABB_LDOVBBMPU_MUX_CTRL_MASK;
46 /* setup LDOVBB using fused value */
47 clrsetbits_le32(ldovbb, OMAP5_ABB_LDOVBBMPU_VSET_OUT_MASK, vset);